Saint-Pierre doré B
Name of vine variety in France
Saint-Pierre doré
Origin
This vine variety is native to the Allier and based on published genetic analyses, is probably a descendant of Gouais B.
Synonymy
Regulations
In France, Saint-Pierre doré B is officially listed in the "Catalogue of vine varieties".
Use
Wine grape variety
Evolution of area under vines in France
1958 1968 1979 1988 2016
ha 123 81 6 2 0.3
Description
Identification signs include:
- the tip of the young shoot has a moderate to heavy coat of flat-lying hairs,
- young leaves have bronze patches,
- the shoots have red internodes,
- orbicular adult leaves, whole or with 3 lobes with a slightly open petiolar sinus or slightly overlapping lobes; very long teeth compared to width at base with straight sides; moderate anthocyanin coloration of veins, jagged leaf blade, cupped, bubbled, wavy between the principle veins and the underside with a sparse coat of upright and flat-lying hairs, 
- round-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 225 239 176 188 238 240 233 255
Allel 2 141 232 239 182 196 252 254 245 271
Phenology
Bud burst: 6 days after Chasselas.
Grape maturity: period II, 2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Saint-Pierre doré B is moderately vigorous, rather productive and should be moderately long pruned.
Sensitivity to diseases and pests
Saint-Pierre doré B is extremely susceptible to grey rot but is however not very affected by powdery and downy mildew.
Technological potential
Grape clusters are large and the berries are moderate in size. Saint-Pierre doré B produces ordinary wine with low degree of alcohol and relatively acid which can also possibly be used as a base wine for sparkling wines.
Clonal selection in France
There are no approved clones for this vine variety at the present time.
Bibliographic references
- Catalogue des variétés et clones de vigne cultivés en France. Collectif, 2007, Ed. IFV, Le Grau-du-Roi.
- Documentation interne du Domaine de Vassal. 1949-2011, INRA, Marseillan-plage.
- Cépages et vignobles de France, tome 1. P. Galet, 1990, Ed. Dehan, Montpellier.
- Ampélographie. P. Viala et V. Vermorel, 1902-1910, Ed. Masson, Paris.